Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site

A reduced pressure dressing for applying reduced pressure treatment to a tissue site, the reduced pressure dressing comprising: an interface layer comprising foam adapted to be positioned at the tissue site; a first manifold layer in fluid communication with the interface layer; an absorbent layer in fluid communication with the first manifold layer to absorb liquid from at least one of the first manifold layer, the interface layer, and the tissue site; a diverter layer formed from a substantially gas-impermeable material, the diverter layer including a plurality of spaced apertures in fluid communication with the absorbent layer; a second manifold layer in fluid communication with the diverter layer; a pump in fluid communication with the second manifold layer to deliver a reduced pressure to the tissue site; a cover positioned over the pump, the second manifold layer, the diverter layer, the absorbent layer, the first manifold layer, and the interface layer to maintain the reduced pressure at the tissue site, wherein the second manifold layer is disposed between the absorbent layer and the cover; and a liquid-air separator positioned between the second manifold and the pump to inhibit liquid from entering the pump.

The reduced pressure dressing of claim 6 further comprising a seal layer positioned between the diverter layer and the tissue surrounding the tissue site.

A reduced pressure dressing for applying reduced pressure treatment to a tissue site, the reduced pressure dressing comprising: an interface layer adapted to be positioned at the tissue site; a first manifold layer in fluid communication with the interface layer; an absorbent layer in fluid communication with the first manifold layer to absorb liquid from at least one of the first manifold layer, the interface layer, and the tissue site; a diverter layer formed from a substantially gas-impermeable material, the diverter layer including a plurality of spaced apertures in fluid communication with the absorbent layer, wherein at least one of the apertures is configured to become smaller on contact with moisture; a second manifold layer in fluid communication with the diverter layer; a pump in fluid communication with the second manifold layer to deliver a reduced pressure to the tissue site; a cover positioned over the pump, the second manifold layer, the diverter layer, the absorbent layer, the first manifold layer, and the interface layer to maintain the reduced pressure at the tissue site; and a liquid-air separator positioned between the second manifold and the pump to inhibit liquid from entering the pump.

A reduced pressure dressing for applying reduced pressure treatment to a tissue site, the reduced pressure dressing comprising: an interface layer adapted to be positioned at the tissue site; a first manifold layer in fluid communication with the interface layer; an absorbent layer in fluid communication with the first manifold layer to absorb liquid from at least one of the first manifold layer, the interface layer, and the tissue site; a diverter layer formed from a substantially gas-impermeable material, the diverter layer including a plurality of spaced apertures in fluid communication with the absorbent layer; a seal layer configured to be positioned between the diverter layer and tissue surrounding the tissue site; a second manifold layer in fluid communication with the diverter layer; a pump in fluid communication with the second manifold layer to deliver a reduced pressure to the tissue site; a cover positioned over the pump, the second manifold layer, the diverter layer, the absorbent layer, the first manifold layer, and the interface layer to maintain the reduced pressure at the tissue site; and a liquid-air separator positioned between the second manifold and the pump to inhibit liquid from entering the pump.

A reduced pressure dressing for applying reduced pressure treatment to a tissue site, the reduced pressure dressing comprising: an interface layer adapted to be positioned at the tissue site; a first manifold layer in fluid communication with the interface layer; an absorbent layer in fluid communication with the first manifold layer to absorb liquid from at least one of the first manifold layer, the interface layer, and the tissue site; a diverter layer formed from a substantially gas-impermeable material, the diverter layer including a plurality of spaced apertures in fluid communication with the absorbent layer, wherein the diverter layer includes a plurality of ridges on a surface of the diverter layer to define a plurality of channels between the ridges; a second manifold layer in fluid communication with the diverter layer; a pump in fluid communication with the second manifold layer to deliver a reduced pressure to the tissue site; a cover positioned over the pump, the second manifold layer, the diverter layer, the absorbent layer, the first manifold layer, and the interface layer to maintain the reduced pressure at the tissue site; and a liquid-air separator positioned between the second manifold and the pump to inhibit liquid from entering the pump.